All Algorithms
ECDSA-P521
Quantum UnsafeDigital Signature algorithm
This algorithm will be broken by a cryptographically relevant quantum computer. Migration is recommended.
Algorithm Details
Category
Digital Signature
Quantum Safety
Quantum Unsafe
Key Lengths (bits)
521
FIPS Standard
FIPS 186-5
Known Vulnerabilities
- Shor's algorithm (ECDLP)
Notes
Largest standard NIST curve. Provides ~256-bit classical security but no quantum resistance.
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